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+## Copyright (C) 1994-2011 John W. Eaton
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 3 of the License, or (at
+## your option) any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} {} create_set (@var{x})
+## @deftypefnx {Function File} {} create_set (@var{x}, "rows")
+## This function has been deprecated.  Use unique instead.
+## @end deftypefn
+
+## Return a row vector containing the unique values in @var{x}, sorted in
+## ascending order.  For example,
+##
+## @example
+## @group
+## create_set ([ 1, 2; 3, 4; 4, 2; 1, 2 ])
+##      @result{} [ 1, 2, 3, 4 ]
+## @end group
+## @end example
+##
+## If the optional second input argument is the string "rows" each row of
+## the matrix @var{x} will be considered an element of set.  For example,
+## @example
+## @group
+## create_set ([ 1, 2; 3, 4; 4, 2; 1, 2 ], "rows")
+##      @result{}  1   2
+##     3   4
+##     4   2
+## @end group
+## @end example
+## @seealso{union, intersect, complement, unique}
+
+## Author: jwe
+
+## Deprecated in version 3.2
+
+function y = create_set (x, rows_opt)
+
+  persistent warned = false;
+  if (! warned)
+    warned = true;
+    warning ("Octave:deprecated-function",
+             "create_set is obsolete and will be removed from a future version of Octave, please use unique instead");
+  endif
+
+  if (nargin < 1 || nargin > 2)
+    print_usage ();
+  endif
+
+  if (nargin == 1)
+    y = unique (x)(:)';
+  elseif (strcmpi (rows_opt, "rows"))
+    y = unique (x, "rows");
+  else
+    error ("create_set: expecting \"rows\" as second argument");
+  endif
+
+endfunction
+
+%!assert(all (all (create_set ([1, 2, 3, 4, 2, 4]) == [1, 2, 3, 4])));
+%!assert(all (all (create_set ([1, 2; 3, 4; 2, 4]) == [1, 2, 3, 4])));
+%!assert(all (all (create_set ([1; 2; 3; 4; 2; 4]) == [1, 2, 3, 4])));
+%!assert(isempty (create_set ([])));
+%!error create_set (1, 2);
+